Describes results from the Bates Experimental Road project (1920-1921) which tested various pavements, for use in the construction of the state's rural highway system, on a 2.5 mile stretch near Bates, Illinois.

Papers, Addresses, Reports: Some Problems in the Origin of the Mineral Veins (Address of the Retiring President); History and Forecast of Population of the State of Illinois; Extract From the Report of the Section Chairman (Agriculture);...

Papers, Addresses, Reports: Extract from the Report of the Secretary; Address of the Retiring President: Some Aspects of Human Society in the Light of Geologic Philosophy; Stream Pollution Problems; Extract from the Report of the Section...